Invalid property 'driver_class' of bean class

最新推荐文章于 2022-07-14 18:24:03 发布
最新推荐文章于 2022-07-14 18:24:03 发布 · 434 阅读 · 0
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#java #数据库

本文详细解析了在使用Spring框架时，遇到的与MySQL配置不匹配导致的应用启动失败问题，通过调整配置文件中的属性名，成功解决了错误，并提供了详细的错误原因分析与解决步骤。

1、错误描述

INFO:2015-05-01 13:06:07[localhost-startStop-1] - Initializing c3p0-0.9.2.1 [built 20-March-2013 10:47:27 +0000; debug? true; trace: 10]
WARN:2015-05-01 13:06:07[localhost-startStop-1] - Exception encountered during context initialization - cancelling refresh attempt
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [applicationContext.xml]: Error setting property values; nested exception is org.springframework.beans.NotWritablePropertyException: Invalid property 'driver_class' of bean class [com.mchange.v2.c3p0.ComboPooledDataSource]: Bean property 'driver_class' is not writable or has an invalid setter method. Did you mean 'driverClass'?
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1508)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1216)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:538)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:229)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:725)
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
	at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:403)
	at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:306)
	at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:106)
	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4994)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5492)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:649)
	at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1245)
	at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1895)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
	at java.util.concurrent.FutureTask.run(FutureTask.java:262)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:745)
Caused by: org.springframework.beans.NotWritablePropertyException: Invalid property 'driver_class' of bean class [com.mchange.v2.c3p0.ComboPooledDataSource]: Bean property 'driver_class' is not writable or has an invalid setter method. Did you mean 'driverClass'?
	at org.springframework.beans.BeanWrapperImpl.setPropertyValue(BeanWrapperImpl.java:1065)
	at org.springframework.beans.BeanWrapperImpl.setPropertyValue(BeanWrapperImpl.java:923)
	at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:95)
	at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:75)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1504)
	... 26 more
ERROR:2015-05-01 13:06:07[localhost-startStop-1] - Context initialization failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [applicationContext.xml]: Error setting property values; nested exception is org.springframework.beans.NotWritablePropertyException: Invalid property 'driver_class' of bean class [com.mchange.v2.c3p0.ComboPooledDataSource]: Bean property 'driver_class' is not writable or has an invalid setter method. Did you mean 'driverClass'?
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1508)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1216)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:538)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:229)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:725)
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
	at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:403)
	at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:306)
	at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:106)
	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4994)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5492)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:649)
	at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1245)
	at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1895)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
	at java.util.concurrent.FutureTask.run(FutureTask.java:262)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:745)
Caused by: org.springframework.beans.NotWritablePropertyException: Invalid property 'driver_class' of bean class [com.mchange.v2.c3p0.ComboPooledDataSource]: Bean property 'driver_class' is not writable or has an invalid setter method. Did you mean 'driverClass'?
	at org.springframework.beans.BeanWrapperImpl.setPropertyValue(BeanWrapperImpl.java:1065)
	at org.springframework.beans.BeanWrapperImpl.setPropertyValue(BeanWrapperImpl.java:923)
	at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:95)
	at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:75)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1504)
	... 26 more
五月 01, 2015 1:06:07 下午 org.apache.catalina.core.StandardContext listenerStart
严重: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [applicationContext.xml]: Error setting property values; nested exception is org.springframework.beans.NotWritablePropertyException: Invalid property 'driver_class' of bean class [com.mchange.v2.c3p0.ComboPooledDataSource]: Bean property 'driver_class' is not writable or has an invalid setter method. Did you mean 'driverClass'?
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1508)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1216)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:538)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
	at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:302)
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:229)
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:298)
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:193)
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:725)
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757)
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
	at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:403)
	at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:306)
	at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:106)
	at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4994)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5492)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
	at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
	at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:649)
	at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1245)
	at org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1895)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
	at java.util.concurrent.FutureTask.run(FutureTask.java:262)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
	at java.lang.Thread.run(Thread.java:745)
Caused by: org.springframework.beans.NotWritablePropertyException: Invalid property 'driver_class' of bean class [com.mchange.v2.c3p0.ComboPooledDataSource]: Bean property 'driver_class' is not writable or has an invalid setter method. Did you mean 'driverClass'?
	at org.springframework.beans.BeanWrapperImpl.setPropertyValue(BeanWrapperImpl.java:1065)
	at org.springframework.beans.BeanWrapperImpl.setPropertyValue(BeanWrapperImpl.java:923)
	at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:95)
	at org.springframework.beans.AbstractPropertyAccessor.setPropertyValues(AbstractPropertyAccessor.java:75)
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1504)
	... 26 more
五月 01, 2015 1:06:07 下午 com.sun.faces.config.ConfigureListener contextInitialized
信息: 初始化上下文 '/SpringMVCH' 的 Mojarra 2.0.3 (FCS b03)
五月 01, 2015 1:06:08 下午 com.sun.faces.spi.InjectionProviderFactory createInstance
信息: JSF1048：有 PostConstruct/PreDestroy 注释。标有这些注释的 ManagedBeans 方法将表示注释已处理。
五月 01, 2015 1:06:09 下午 org.apache.catalina.core.StandardContext startInternal
严重: Error listenerStart
五月 01, 2015 1:06:09 下午 org.apache.catalina.core.StandardContext startInternal
严重: Context [/SpringMVCH] startup failed due to previous errors
五月 01, 2015 1:06:09 下午 org.apache.catalina.core.ApplicationContext log
信息: Closing Spring root WebApplicationContext
五月 01, 2015 1:06:09 下午 org.apache.catalina.loader.WebappClassLoader checkThreadLocalMapForLeaks
严重: The web application [/SpringMVCH] created a ThreadLocal with key of type [com.sun.faces.util.Util$1] (value [com.sun.faces.util.Util$1@407b059a]) and a value of type [java.util.HashMap] (value [{com.sun.faces.patternCache={ = }}]) but failed to remove it when the web application was stopped. Threads are going to be renewed over time to try and avoid a probable memory leak.
五月 01, 2015 1:06:09 下午 org.apache.catalina.startup.HostConfig deployDirectory

2、错误原因

#MySQL\u9A71\u52A8
hibernate.connection.driver_class=com.mysql.jdbc.Driver

<property name="driver_class" value="${hibernate.connection.driver_class}"/>


3、解决办法

#MySQL\u9A71\u52A8
hibernate.connection.driverClass=com.mysql.jdbc.Driver

<property name="driverClass" value="${hibernate.connection.driverClass}"/>


iteye_8264
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invalid bean definition with name :null;nested exception is这是什么错
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在 Spring 应用程序中，错误信息 `Invalid bean definition with name 'null'` 通常表示容器在加载 Bean 定义时无法正确解析某个 Bean 的名称。这种错误可能由多种原因引起，包括配置文件缺失、占位符未解析、XML 文件格式错误、或者 Bean 定义的命名空间处理不当等。 ### 常见原因与解决方法 1. **占位符未能正确解析** 当 Spring 配置文件中使用了 `${}` 形式的占位符（如数据库连接信息），但对应的属性文件未正确加载，Spring 将无法解析这些占位符，从而导致 Bean 定义失败。 - 确保所有属性文件都通过 `<context:property-placeholder>` 正确引入，并且路径无误。例如： ```xml <context:property-placeholder location="classpath:jdbc.properties, classpath:redis.properties"/> ``` [^3] - 如果使用多个属性文件，确保它们都包含在 `location` 属性中，并且没有遗漏。 2. **属性文件未正确加载到 Spring 容器中** 如果属性文件（如 `jdbc.properties`）未被正确加载，Spring 容器将无法识别其中定义的变量。 - 检查属性文件是否存在于类路径中，并且文件名和路径与配置一致。 - 如果使用 `PropertyPlaceholderConfigurer`，确保容器中仅存在一个该类的实例，以避免 Spring 停止对其他配置文件的扫描。例如： ```xml <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> <property name="locations"> <list> <value>classpath:jdbc.properties</value> <value>classpath:redis.properties</value> </list> </property> </bean> ``` 3. **XML 配置文件格式错误或命名空间缺失** Spring 配置文件中如果存在格式错误（如标签未闭合、标签名称拼写错误等）或缺少必要的命名空间声明，可能导致某些 Bean 无法被正确识别。 - 检查 XML 文件中的标签是否正确闭合，尤其是 `<bean>` 标签。 - 确保所有使用到的命名空间（如 `context`、`aop`、`tx` 等）都在文件顶部正确声明。例如： ```xml <beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> ``` 4. **环境差异导致的配置问题** 如果相同配置在不同环境中表现不一致（如本地运行正常，但服务器上报错），可能是由于环境变量、文件编码、文件路径差异或服务器配置不同导致的。 - 检查服务器上的文件编码是否与开发环境一致。 - 确保服务器上的类路径与本地一致，尤其是属性文件的位置。 - 检查服务器上的日志文件，确认是否存在其他潜在错误或警告信息。 5. **数据库连接池配置问题** 如果错误发生在数据库连接池（如 Druid）的 Bean 定义中，可能是由于数据库驱动类或连接信息未正确解析。 - 确保 `driverClassName` 和 `url` 等关键属性的值正确解析。例如： ```xml <property name="driverClassName" value="${jdbc.driver}"/> <property name="url" value="${jdbc.url}"/> ``` [^4] - 如果占位符未解析，检查属性文件中是否定义了 `jdbc.driver` 和 `jdbc.url`，并且路径无误。 6. **Spring 容器初始化失败** 如果上下文初始化失败，Spring 容器可能无法正确加载所有 Bean，从而导致 Bean 名称为 `null`。 - 查看完整的日志信息，确认上下文初始化过程中是否有其他异常抛出。 - 检查 `web.xml` 中的 `contextConfigLocation` 配置是否正确，确保 Spring 配置文件路径无误。 ### 示例代码：检查并修复占位符解析问题 以下是一个典型的 Spring 配置片段，展示了如何正确引入属性文件并解析占位符： ```xml <beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <!-- 引入多个属性文件 --> <context:property-placeholder location="classpath:jdbc.properties, classpath:redis.properties"/> <!-- 数据库连接池配置 --> <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close"> <property name="url" value="${jdbc.url}"/> <property name="username" value="${jdbc.username}"/> <property name="password" value="${jdbc.password}"/> <property name="driverClassName" value="${jdbc.driver}"/> </bean> </beans> ``` ###
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